chore: 移除内部协作文档

docs: 添加项目开发路线图

feat(api): standardize health response and policy error codes

fix(e2e): relax timeouts and align ci runtime

fix(ci): correct badges and harden e2e startup

fix(ci): split unit and e2e vitest configs

fix: 修复 CI 配置错误

[codex] feat: Task 011 - 文档

[codex] feat: Task 010 - E2E 测试

[codex] feat: Task 009 - 示例代码

[codex] feat: Task 008 - MPCWallet 高层封装类

[codex] feat: Task 007 - TypeScript SDK 基础 + HTTP 客户端

[task-006] feat: 策略引擎基础版实现

[task-005] feat: Shard 2 持久化存储层

[task-004] feat: HTTP API 服务实现